HAMAR LASER Dual Scan L-732, Руководство по эксплуатации

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20
Three Point Buck-In Procedure Using Multiple Targets
This method requires three targets. The procedure is basically the same as with one target, but it saves the
time required to move a single target to the three different footprints.
Figure 13 –
Three Point Buck-in Using Multiple Targets
1. Zero all three targets on the near footprint.
2. Place two of the targets on the other two footprints.
3. Tilt or aim the laser until all three readouts read the same numbers and the same sign.
4. When all three readouts read the same, the laser plane is then parallel to all three points.
Two Point Buck-In (Straightness)
A laser beam is often used as a "straight edge" to measure straightness. Examples are machine tool ways
or bore straightness measurement. The laser beam must be adjusted to be parallel to or coincident with an
edge or centerline. The process of making that adjustment is called "bucking in." This section describes
two types of buck-in methods: close (simple) and remote (more difficult).
Two points in space define a unique straight line; therefore, two reference points are needed in order to
relate the position of a laser beam to a surface or centerline. Any two points may be chosen (the suitability
of the points cannot be judged until after the measurement has been done). The points are usually selected
near the extreme ends of the job for the sake of convenience. A Two Point Buck-In makes the laser beam
parallel with these two points. It is best to place the laser source in a position that is as close to the near
target position as possible. Orient the laser so that either the long axis of the base or the short axis of the
base is parallel to the near and the far target positions.